Systems'Approach for Interpreting Horoscopes provides consistent, non-confusing and non-contradictory principles for analysis of birth charts. For the convenience of those seeking predictive accuracy, free lessons have been provided on my website including the predictive techniques.

There are many concepts in traditional (classical) astrology which are totally redundant.
There are many points of difference:
The first and foremost principle of SA is the functional nature of planets.

The second is that in SA, we see the chart from Ascendant only - both in case of the natal and transit charts.
-The third is orb of conjunction and aspect.
-All houses except 6th, 8th and 12th houses are good.
-The trend results are seen through sub periods.
-The triple transit influences supersede sub period results.

- SA does not believe in:
(i) Chalit (ii) Jamini karakas (iii) jamini dasas (iv) important yogas as laid down in the fixed mode without identifying the functional nature of the planets (v) maraka planets (vi) that the benefics owning good houses become malefic planets (vii) Badhaka principles, (vii) calculation of strengths per traditional graha and bhava balas (viii) traditional manglik (ix) traditional sade-sati, (x) conditional dasas, (ix) traditional concept of influence of planets in retrogression, etc. etc.

The analytical principles of the traditional astrology can never match

(i) the shortest time required for learning and applying predictive techniques, (ii) confidence, (iii) competence and (iv) speed of an SA astrologer.

Another Special Feature of SA:

The Sun like houses and the Sun like planets.